Role of oxygen surface groups in catalysis of hydrogasification of carbon black by potassium carbonate

Hossein Zoheidi, Dennis J. Miller

Research output: Contribution to journalArticle

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Abstract

The reaction rates of a nonporous graphitic carbon lampblack with hydrogen gas at 865°C and 500 psi were measured following treatments such as degassing and/or oxidation with and without impregnation of K2CO3. The results lead to the conclusion that oxygen surface groups enhance the reactivity of the carbon by generating "nascent" active sites on decomposition into CO and CO2. In the catalyzed case the basic and CO carbonyl groups form active and stable surface complexes. The acidic groups, on the other hand, could not be well characterized and may form stable and inactive or unstable and active complexes depending on their nature.

LanguageEnglish (US)
Pages809-819
Number of pages11
JournalCarbon
Volume25
Issue number6
DOIs
StatePublished - 1987

Profile

Soot
Potash
Carbon Monoxide
Carbon black
Catalysis
Oxygen
Carbon
Degassing
Impregnation
Reaction rates
Decomposition
Oxidation
Hydrogen
Gases
potassium carbonate

Keywords

  • Carbon black
  • catalysis
  • gasification
  • hydrogen
  • potassium carbonate
  • surface complexes

ASJC Scopus subject areas

  • Materials Chemistry

Cite this

Role of oxygen surface groups in catalysis of hydrogasification of carbon black by potassium carbonate. / Zoheidi, Hossein; Miller, Dennis J.

In: Carbon, Vol. 25, No. 6, 1987, p. 809-819.

Research output: Contribution to journalArticle

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